Comb



FIG. 1 is a front elevational view of a comb showing our new design;

FIG. 2 is a bottom plan view;

FIG. 3 is a top plan view;

FIG. 4 is a right side elevational view;

FIG. 5 is a left side elevational view; and

FIG. 6 is a rear elevational view of the comb rotated 180°. 

The ornamental design for a comb, as shown and described. 